摘要
炼油厂常减压蒸馏装置的腐蚀问题相对较多,尤以常顶系统的腐蚀较为严重,腐蚀特征主要为低温部位的HCl-H_2S-H_2O型腐蚀及铵盐垢下腐蚀,单凭升级材质很难抑制低温部位腐蚀,应配合工艺防腐蚀措施才能有效抑制腐蚀。根据HCl-H_2S-H_2O型腐蚀及铵盐垢下腐蚀的特点,分析了塔顶冷凝系统的腐蚀成因,并提出了相应的防腐蚀措施及管理方法。
Corrosion problems of atmospheric-vacuum distillation unit take up a large proportion of all the troubles in a refinery,especially for overhead system,which characterizes with HCl-H2S-H2O corrosion and ammonium salt corrosion in low temperature section. It is difficult to keep such corrosion under control by upgrading material unless to carry out preventive measures.Corrosion cause of overhead condensing system was analyzed based on characteristics of HCl-H2 S-H2O corrosion and ammonium salt corrosion,and corresponding measures and management approaches were put forward.
作者
吴祥
任日菊
程伟
WU Xiang;REN Riju;CHENG Wei(Hefei General Machinery Research Institute,National Safety Engineering Technology Research Center for Pressure Vessels and Pipelines,Hefei 230031,China;Anhui Provincial Laboratory for Safety Technology of Pressure Vessels and Pipelines,Hefei 230031,China)
出处
《石油化工腐蚀与防护》
CAS
2018年第2期30-33,共4页
Corrosion & Protection In Petrochemical Industry
基金
国家高新技术研究发展计划("八六三"计划)(2014AA041806)
关键词
常顶系统
腐蚀分析
腐蚀管理
overhead system of atmospheric-vacuum distillation unit
corrosinon analysis
corrosion management
